Generally — Most Areas
crape myrtle (zones 6-9) partially overlaps with Missouri (5b-7a). It can grow in zones 6-7 within the state.
Your yard isn't the whole zone.
Missouri spans zones 5b-7a, but your yard sits in exactly one — and slope, tree cover, and cold-air pockets nudge it further. Enter your address and we'll score crape myrtle against your parcel's actual hardiness, soil, and sun.
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Zone Comparison
Crape Myrtle Needs
- USDA Zones: 6-9
- Soil pH: 4.5 - 7.5
- Sun: Full Sun
- Drainage: well (dry spells)
- Frost-Free Days: 210+
Missouri Has
- USDA Zones: 5b-7a
- Last Frost: Apr 5 - Apr 25
- First Frost: Oct 5 - Oct 30
- Annual Rainfall: 34-50 inches
- Common Soils: Silt loam, Clay loam, Loess
Plant Zone Range (zones 6-9)
Preferred Soil pH
Plant data: USDA PLANTS Database / plant_species_v5.csv. State data: USDA ARS PHZM 2023, NOAA Climate Normals, NRCS SSURGO.
When to Plant Crape Myrtle in Missouri
The frost window
Across Missouri, the last spring frost clears between Apr 5 and Apr 25, and the first fall frost lands between Oct 5 and Oct 30 (NOAA Climate Normals 1991-2020). Counting from the latest last frost to the earliest first frost, that's a 163-day window you can count on — up to 208 days on a mild site in a kind year.
Frost tenderness
Crape Myrtle is frost-tender — its listed minimum temperature is 42.8°F (USDA PLANTS Database) — so set plants out after the last frost has cleared your local site, not the state's earliest date.
Establishment timing
As a long-lived plant, crape myrtle isn't racing the calendar to a harvest date. Plant it in spring once the last-frost window passes so roots settle in through the full season, or in early fall while the soil still holds summer warmth.
Timing tuned to sub-state frost dates — Putnam County, not the statewide average.
Frost window: NOAA Climate Normals 1991-2020. Plant timing fields: USDA PLANTS Database. Your site's own frost dates can run earlier or later than the state range — a parcel report pins them down.
Growing Season Fit
Zone compatibility says you can survive winter here. Whether the growing season is long enough — and warm enough — is a different question.
Frost-free days
Crape Myrtle wants 210+ frost-free days; a typical Missouri site sees ~190 (NOAA Climate Normals). That leaves tight; use transplants and pick early-maturing cultivars.
Chill hours
Crape Myrtle requires ~400 chill hours (32-45°F dormancy window). Missouri typically banks ~1050 chill hours per winter (MSU Extension method), which keeps this plant on track.
Climate aggregates derive from USDA NRCS county-level hardiness data + Cornell CALS Extension GDD-by-region tables + MSU Extension chill-hours-by-zone (1991-2020 NOAA Climate Normals baseline).
Soil + Drainage Fit
Crape Myrtle likes near-neutral soil (pH 4.5-7.5). That's the common-ground band across Missouri's silt loam and clay loam — a soil test confirms it for your site. Drainage matters: this plant wants well (dry spells). If your Missouri site is heavier clay or sits in a low spot, raised beds or amendment with compost solve it.
Your land, not the state average
Whether crape myrtle thrives in Missouri comes down to drainage, and SSURGO drainage class flips from well-drained to poorly-drained parcel to parcel — your soil map unit, not the state average, is the real answer.
Check your parcel → Source: USDA NRCS SSURGO.
Plant pH and drainage requirements from USDA PLANTS Database. Missouri soil profile from USDA NRCS SSURGO. Site-specific verification: a 30-minute soil test from your local Extension lab.
Crape Myrtle in Missouri — Quick Answer
- Verdict: Generally — Most Areas
- Plant Zones: 6-9 (USDA PLANTS Database)
- State Zones: 5b-7a (USDA ARS PHZM 2023)
- Growing Season: Apr 5 - Apr 25 to Oct 5 - Oct 30 (NOAA Climate Normals)
What Else to Consider
Zone compatibility tells you about winter cold survival — but Missouri growers also need to think about:
Highly variable weather with late frosts and early heat
Let your local frost normals call the plantings — Missouri springs punish the calendar-planters and reward the patient.
Heavy clay soils in many regions
Raised beds solve clay drainage the first weekend — and yearly compost turns the ground under them into loam.
Ozark soils are thin and rocky
One soil test shows what thin Ozark ground actually holds — then build up with compost or beds where the depth runs out.
Growing crape myrtle here specifically
Crape Myrtle rates to USDA zones 6–9 and is hardy to about 42°F, but cold isn't the risk in Missouri — wet is: with roughly 31.8% of its soils poorly-drained (SSURGO), soggy ground rots the crown.
Give crape myrtle a raised bed or mounded row with coarse amendment so its crown never sit wet. How to handle it →
Timing shifts within Missouri
Missouri isn't one climate. In Putnam County, the last hard freeze (28°F) holds until about Mar 23 — roughly 13 days later than the recorded state median — so plant crape myrtle to your county's window, not the statewide date.
County last-freeze dates: NOAA/PRISM Climate Normals 1991-2020, 28°F threshold (earlier than the folk 32°F "last frost"). A parcel report resolves your address's own frost dates.
Pollinator + Wildlife Value
Crape Myrtle draws pollinators (moderate value, USDA PLANTS Database). Planting it near vegetable beds can lift fruit set on neighboring crops.
Missouri Cooperative Extension
For Missouri-specific cultivar recommendations, planting calendars, and pest pressure for crape myrtle, the canonical source is MU Extension. Their fact sheets carry the local trial data we can't generalize across 50 states.
Is Crape Myrtle native to Missouri?
No — the USDA PLANTS Database lists Crape Myrtle as introduced rather than native in the Lower 48, so it is not part of Missouri's native flora. It grows here as a garden plant; pairing it with a few Missouri natives keeps local pollinators fed too.
Looking for plants that belong here? The Missouri growing guide lists USDA-documented natives for the state.
Native-range data: USDA PLANTS Database state-distribution records, accessed 2026-07-01.
Common Questions About Growing Crape Myrtle in Missouri
When can I plant Crape Myrtle in Missouri?
Missouri's last spring frost clears between Apr 5 and Apr 25, and the first fall frost lands between Oct 5 and Oct 30 (NOAA Climate Normals 1991-2020). Crape Myrtle is a long-lived planting, so target spring just after your local last frost — or early fall while the soil holds warmth — and let it establish through the season.
What hardiness zone is Crape Myrtle grown in across Missouri?
Missouri spans USDA hardiness zones 5b-7a (USDA ARS PHZM 2023). Crape Myrtle carries a range of zones 6-9, so the overlap zones are where outdoor growing is most reliable.
How many frost-free days does a typical Missouri site have?
A typical Missouri site sees ~190 frost-free days per year (derived from NOAA Climate Normals 1991-2020). Crape Myrtle needs 210+ frost-free days, so check whether your local microclimate runs above or below the state average before settling on a planting date. In cooler counties like Putnam, the freeze-free season runs shorter than the state average, so verify your own county's window.
Is Crape Myrtle native to Missouri?
No — the USDA PLANTS Database lists Crape Myrtle as introduced rather than native in the Lower 48, so it is not part of Missouri's native flora. It grows here as a garden plant; pairing it with a few Missouri natives keeps local pollinators fed too.
How should I amend the soil for Crape Myrtle in Missouri?
Crape Myrtle prefers pH 4.5-7.5 and well (dry spells) drainage (USDA PLANTS Database). That sits in the common-ground band across Missouri soils — a 30-minute soil test from a local Extension lab confirms it for your specific site.
Will Crape Myrtle actually grow on my specific land in Missouri?
State-level zone + climate data is a sketch. A Growable Ground parcel report scores crape myrtle against your address's exact soil pH, drainage, sun, and frost-date data drawn from USDA SSURGO, NOAA, and PRISM — not state averages.
Check your specific parcel in Missouri
State-level data is a sketch. Your Growable Ground report scores crape myrtle against your parcel's exact soil, sun, drainage, and frost data — not zone averages.
Three things about your exact spot that zone averages miss:
We read public map data for this spot — soil, climate, flood, and parcel records. How we handle your address.
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Analysis by the Growable Ground research team, grounded in USDA PLANTS, USDA NRCS SSURGO, NOAA Climate Normals (1991-2020), and named Cooperative Extension sources. How we know →